query: SELECT Name FROM singer WHERE Singer_ID NOT IN (SELECT Singer_ID FROM song)
question: What-what the sname of every sing does not have any song one?
query_toks: SELECT Name FROM singer WHERE Singer_ID NOT IN ( SELECT Singer_ID FROM song )
query_toks_no_value: select name from singer where singer_id not in ( select singer_id from song )
question_toks: What-what the sname of every sing does not have any song one?